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NTSB investigations: Lycoming VO-435 series, 1986

13 cases on aircraft whose registry engine model is Lycoming VO-435 series. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.

Cases per year

19642026

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Query with SQL
duckdb -csv -c "SELECT c.\"ntsbNumber\", c.\"eventDate\", c.\"eventType\", c.\"eventCity\", c.\"eventStateOrRegion\", a.n_number, a.\"aircraftMake\", a.\"aircraftModel\", c.\"highestInjuryLevel\", c.\"totalFatal\", c.\"completionStatus\", c.report_url
  FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c.\"mKey\" AND a.position = 1
  WHERE year(c.\"eventDate\") = 1986
    AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41525'))
  ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

NTSB NYC87FA039Accident · Serious injuriesField investigationFinal reportBell 47-G2A · Jamesburg, NJThe CFI and private student were practicing lifting off to a hover. The CFI allowed the student to preform one or two under supervision and they were satisfactory. The CFI then allosed the student to start preforming the manuevers. The CFI heard the right…Nov 28, 1986 · N7579 · DestroyedNTSB MIA86LA228Accident · Minor injuriesLimited investigationFinal reportContinental Copters Tomcat MK5A · Indiantown, FLThe aerial application helicopter crashed just after lift-off after sustaining a power failure, the plt stated that he thought the reason for the failure could have been fuel starvation since he had observed some foreign matter in the fuel when he drained the…Aug 5, 1986 · N9086T · Substantial damageNTSB SEA86LA177Accident · Minor injuriesLimited investigationFinal reportBell 47G3B2 · Nahcotta, WAWhile spraying oyster beds the pilot inadvertently flew the helicopter into the ground.Jul 21, 1986 · N7092J · DestroyedNTSB NYC86LA191Accident · No injuriesLimited investigationFinal reportBell 47G-5A · Portland, CTWhile climbing, shortly after takeoff, the eng quit for undetermined reasons. The pilot autorotated into a sand bank where the helicopter received substantial damage.Jul 20, 1986 · N59400 · Substantial damageNTSB SEA86LA168Accident · No injuriesLimited investigationFinal reportBell 47G2A · Chehalis, WADuring an aerial applications maneuver, a complete loss of power occurred. The power loss was caused by failure of the connecting rod bolt. The acft was too low for autorotation and the aircraft struck the ground tail low. The main rotor blade then struck the…Jul 13, 1986 · N12848 · Substantial damageNTSB NYC86FNC05Accident · Minor injuriesFinal reportBell 47G-5 · Walthamer, MEWhile on a spray run the pilot of the Bell 47 was blinded by the sun as he was turning. The aircraft struck power lines, control was lost and the helicopter crashed.Jul 12, 1986 · N7861S · Substantial damageNTSB CHI86FER11Accident · Serious injuriesFinal reportBell 47G-5 · Brooten, MNAccording to the pilot, the helicopter collective control failed to respond to a climb input to level off after a descent for an agricultural swath run. Fire and impact damage to the helicopter was extensive, however one broken rod end in the collective…Jun 17, 1986 · N8122J · DestroyedNTSB SEA86LA143Accident · No injuriesLimited investigationFinal reportBell 47G-2 · Zillah, WAEn route to the local spray area a total loss of power occurred along with a loss of oil pressure. The acft was aprx 200 ft AGL over a pear orchard. The plt was attempting to autorotate onto a nearby road but the left skid caught the roof top of a metal shed.…Jun 12, 1986 · N11VH · DestroyedNTSB NYC86FGM02Accident · Minor injuriesFinal reportContinental Copters OH13H Tomcat Mark 5A · Indiana, PAThe acft collided with wires during a spray run and crashed out of control. The plt tried to fly under the wires that were sighted too late to clear. During his survey of the field the plt had failed to see the wires that were struck. The collision broke off…May 10, 1986 · N41830 · Substantial damageNTSB LAX86LA211Accident · 1 fatalLimited investigationFinal reportBell 47G-5A · AganaThe helicopter crashed into the ocean when the plt attempted to lift off from a tuna boat. Reportedly, only three of the four tiedown ropes, which had secured the helicopter to the boat, had been released. The plt's medical certificate was dated 1/18/84.May 6, 1986 · N2996W · DestroyedNTSB SEA86LA089Accident · No injuriesLimited investigationFinal reportHiller 12E · Walla Walla, WAA catastrophic failure of the planetary gear of the transmission occurred about 51 flight hours after overhaul. During forced landing a hard landing occurred severing the tail boom. A fire then erupted.Mar 30, 1986 · N87595 · DestroyedNTSB LAX86FVD07Accident · No injuriesFinal reportBell 47G-2 · Stockton, CAThe pilot was making a slow pass and dragged one spray boom on the ground. Insufficient airspeed resulted in loss of control. Helicopter crashed.Mar 6, 1986 · N6727D · DestroyedNTSB LAX86LA231Accident · Serious injuriesLimited investigationFinal reportBell 47G-5 · Castaic, CAThe helicopter collided with unmarked wires while heading into sun during spraying operation. Plt does not recall seeing or hitting wires.Feb 27, 1986 · N7802S · Substantial damage